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tsh 6.4
recently i had thyroid tests in which t3 and t4 were normal but tsh was 6.4 . what does that mean . please reply
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649848 tn?1424570775
Your TSH is above the reference range of 0.3 - 3.0, which could indicate that you are hypo.  It would depend on where, in the range, your T3 and T4 fell.  It would also depend on whether the T4 and T3 were "free" or "total".  

If you have a copy of the lab report, can you post the tests that were done, along with the results and the reference ranges used by the lab?  Since different labs use different ranges and/or units of measurement, it's hard to answer your question.  Do you know if there were any antibody tests done?  If your doctor didn't give you a copy of the lab report, it would be a good idea to get one for your records.  I keep all of mine, in order to go back and compare symptoms with the lab results or if you would happen to change doctors, etc.  

Also, keep in mind that TSH is a pituitary hormone and not necessarily indicative of what the thyroid is doing.  Free T3 and Free T4 are the actual thyroid hormones that are available for you body to use and correlate best with thyroid activity.  

Without knowing what the other tests/results were, members can't really comment too much.  
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